The Waterco Supatuf Pump with 2" Quick Connect Unions 1-1/2 HP is part of the series of affordable pumps ideal for large domestic swimming pools with ancillary systems such as heating, in-floor cleaning, fountains, vacuum cleaning , and swim jets. It has been hydraulically designed for high flows at medium head applications. The pump's impeller and diffuser design maximize the hydraulic output of the pump while minimizing turbulence. The pump's efficient hydraulic performance shortens run times and reduces energy consumption leading to lower operating costs. With engineered durability ensuring that the pump body is manufactured utilizing state of the art engineering plastic molding with a single piece strainer pot and volute for extra strength. A high grade 316 stainless steel mechanical seal is incorporated for extra protection against corrosion from chlorinated water, ozone, iodine, Baquacil, bromine, and saltwater. This self-priming pump already includes a large strainer basket. Situated between the pump wet end and the pump motor, a mechanical seal forms a seal around the motor shaft to prevent water from running out along the shaft of a motor. The mechanical seal is the wearing part of any pool pump. A mechanical seal may leak water if the pump is ever run dry or simply be worn out. If a leaky mechanical seal is not replaced promptly, water will travel up the shaft of the motor and ruin the motor in a very short time. Waterco's Secondary Seal protects the pump motor's end shield from any water contact, by capturing any leaks through a worn-out mechanical seal and draining it out of the pump. This particular product, Waterco Supatuf Pump 1-1/2 HP, is a Single Phase 220v - 240v, S/S shaft pump that has a 1.5 horsepower, 2-inch Quick Connect Unions with a maximum quantity of 27.4 cubic meters per hour and a 1.15kW maximum power.